src/mesa/drivers/dri/intel/intel_tex_validate.c

   1 #include "main/mtypes.h"
   2 #include "main/macros.h"
   3 #include "main/samplerobj.h"
   4
   5 #include "intel_context.h"
   6 #include "intel_mipmap_tree.h"
   7 #include "intel_tex.h"
   8
   9 #define FILE_DEBUG_FLAG DEBUG_TEXTURE
  10
  11 /**
  12  * When validating, we only care about the texture images that could
  13  * be seen, so for non-mipmapped modes we want to ignore everything
  14  * but BaseLevel.
  15  */
  16 static void
  17 intel_update_max_level(struct intel_texture_object *intelObj,
  18                        struct gl_sampler_object *sampler)
  19 {
  20    struct gl_texture_object *tObj = &intelObj->base;
  21
  22    if (sampler->MinFilter == GL_NEAREST ||
  23        sampler->MinFilter == GL_LINEAR) {
  24       intelObj->_MaxLevel = tObj->BaseLevel;
  25    } else {
  26       intelObj->_MaxLevel = tObj->_MaxLevel;
  27    }
  28 }
  29
  30 /**
  31  * Copies the image's contents at its level into the object's miptree,
  32  * and updates the image to point at the object's miptree.
  33  */
  34 static void
  35 copy_image_data_to_tree(struct intel_context *intel,
  36                         struct intel_texture_object *intelObj,
  37                         struct intel_texture_image *intelImage)
  38 {
  39    if (intelImage->mt) {
  40       /* Copy potentially with the blitter:
  41        */
  42       intel_miptree_image_copy(intel,
  43                                intelObj->mt,
  44                                intelImage->base.Base.Face,
  45                                intelImage->base.Base.Level, intelImage->mt);
  46    }
  47    else {
  48       assert(intelImage->base.Base.Data != NULL);
  49
  50       /* More straightforward upload.
  51        */
  52       intel_miptree_image_data(intel,
  53                                intelObj->mt,
  54                                intelImage->base.Base.Face,
  55                                intelImage->base.Base.Level,
  56                                intelImage->base.Base.Data,
  57                                intelImage->base.Base.RowStride,
  58                                intelImage->base.Base.RowStride *
  59                                intelImage->base.Base.Height);
  60       _mesa_align_free(intelImage->base.Base.Data);
  61       intelImage->base.Base.Data = NULL;
  62    }
  63
  64    intel_miptree_reference(&intelImage->mt, intelObj->mt);
  65 }
  66
  67
  68 /*
  69  */
  70 GLuint
  71 intel_finalize_mipmap_tree(struct intel_context *intel, GLuint unit)
  72 {
  73    struct gl_context *ctx = &intel->ctx;
  74    struct gl_texture_object *tObj = intel->ctx.Texture.Unit[unit]._Current;
  75    struct intel_texture_object *intelObj = intel_texture_object(tObj);
  76    struct gl_sampler_object *sampler = _mesa_get_samplerobj(ctx, unit);
  77    GLuint face, i;
  78    GLuint nr_faces = 0;
  79    struct intel_texture_image *firstImage;
  80
  81    /* We know/require this is true by now:
  82     */
  83    assert(intelObj->base._Complete);
  84
  85    /* What levels must the tree include at a minimum?
  86     */
  87    intel_update_max_level(intelObj, sampler);
  88    firstImage = intel_texture_image(tObj->Image[0][tObj->BaseLevel]);
  89
  90    /* Fallback case:
  91     */
  92    if (firstImage->base.Base.Border) {
  93       intel_miptree_release(&intelObj->mt);
  94       return GL_FALSE;
  95    }
  96
  97    /* Check tree can hold all active levels.  Check tree matches
  98     * target, imageFormat, etc.
  99     *
 100     * For pre-gen4, we have to match first_level == tObj->BaseLevel,
 101     * because we don't have the control that gen4 does to make min/mag
 102     * determination happen at a nonzero (hardware) baselevel.  Because
 103     * of that, we just always relayout on baselevel change.
 104     */
 105    if (intelObj->mt &&
 106        (intelObj->mt->target != intelObj->base.Target ||
 107         intelObj->mt->format != firstImage->base.Base.TexFormat ||
 108         intelObj->mt->first_level != tObj->BaseLevel ||
 109         intelObj->mt->last_level < intelObj->_MaxLevel ||
 110         intelObj->mt->width0 != firstImage->base.Base.Width ||
 111         intelObj->mt->height0 != firstImage->base.Base.Height ||
 112         intelObj->mt->depth0 != firstImage->base.Base.Depth)) {
 113       intel_miptree_release(&intelObj->mt);
 114    }
 115
 116
 117    /* May need to create a new tree:
 118     */
 119    if (!intelObj->mt) {
 120       intelObj->mt = intel_miptree_create(intel,
 121                                           intelObj->base.Target,
 122                                           firstImage->base.Base.TexFormat,
 123                                           tObj->BaseLevel,
 124                                           intelObj->_MaxLevel,
 125                                           firstImage->base.Base.Width,
 126                                           firstImage->base.Base.Height,
 127                                           firstImage->base.Base.Depth,
 128                                           GL_TRUE);
 129       if (!intelObj->mt)
 130          return GL_FALSE;
 131    }
 132
 133    /* Pull in any images not in the object's tree:
 134     */
 135    nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
 136    for (face = 0; face < nr_faces; face++) {
 137       for (i = tObj->BaseLevel; i <= intelObj->_MaxLevel; i++) {
 138          struct intel_texture_image *intelImage =
 139             intel_texture_image(intelObj->base.Image[face][i]);
 140          /* skip too small size mipmap */
 141          if (intelImage == NULL)
 142                  break;
 143          /* Need to import images in main memory or held in other trees.
 144           * If it's a render target, then its data isn't needed to be in
 145           * the object tree (otherwise we'd be FBO incomplete), and we need
 146           * to keep track of the image's MT as needing to be pulled in still,
 147           * or we'll lose the rendering that's done to it.
 148           */
 149          if (intelObj->mt != intelImage->mt &&
 150              !intelImage->used_as_render_target) {
 151             copy_image_data_to_tree(intel, intelObj, intelImage);
 152          }
 153       }
 154    }
 155
 156    return GL_TRUE;
 157 }
 158
 159 void
 160 intel_tex_map_level_images(struct intel_context *intel,
 161                            struct intel_texture_object *intelObj,
 162                            int level)
 163 {
 164    GLuint nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
 165    GLuint face;
 166
 167    for (face = 0; face < nr_faces; face++) {
 168       struct intel_texture_image *intelImage =
 169          intel_texture_image(intelObj->base.Image[face][level]);
 170
 171       if (intelImage && intelImage->mt) {
 172          intelImage->base.Base.Data =
 173             intel_miptree_image_map(intel,
 174                                     intelImage->mt,
 175                                     intelImage->base.Base.Face,
 176                                     intelImage->base.Base.Level,
 177                                     &intelImage->base.Base.RowStride,
 178                                     intelImage->base.Base.ImageOffsets);
 179          /* convert stride to texels, not bytes */
 180          intelImage->base.Base.RowStride /= intelImage->mt->cpp;
 181          /* intelImage->base.ImageStride /= intelImage->mt->cpp; */
 182       }
 183    }
 184 }
 185
 186 void
 187 intel_tex_unmap_level_images(struct intel_context *intel,
 188                              struct intel_texture_object *intelObj,
 189                              int level)
 190 {
 191    GLuint nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
 192    GLuint face;
 193
 194    for (face = 0; face < nr_faces; face++) {
 195       struct intel_texture_image *intelImage =
 196          intel_texture_image(intelObj->base.Image[face][level]);
 197
 198       if (intelImage && intelImage->mt) {
 199          intel_miptree_image_unmap(intel, intelImage->mt);
 200          intelImage->base.Base.Data = NULL;
 201       }
 202    }
 203 }
 204
 205 void
 206 intel_tex_map_images(struct intel_context *intel,
 207                      struct intel_texture_object *intelObj)
 208 {
 209    int i;
 210
 211    DBG("%s\n", __FUNCTION__);
 212
 213    for (i = intelObj->base.BaseLevel; i <= intelObj->_MaxLevel; i++)
 214       intel_tex_map_level_images(intel, intelObj, i);
 215 }
 216
 217 void
 218 intel_tex_unmap_images(struct intel_context *intel,
 219                        struct intel_texture_object *intelObj)
 220 {
 221    int i;
 222
 223    for (i = intelObj->base.BaseLevel; i <= intelObj->_MaxLevel; i++)
 224       intel_tex_unmap_level_images(intel, intelObj, i);
 225 }